Direct individual measurements
Largest crucian carp by waterway
Ranked by the largest individual measured in EA surveys. The sample size shows how many valid length measurements underpin each waterway's figures.
| Rank | River or waterway | Largest | Median | Measured | Measured at |
|---|---|---|---|---|---|
| 1 | Lincolnshire LakesAnglian | 43.9 cm (17.3 in) | 16.2 cm (6.4 in) | 9,878 | 30 Sept 1986Hoe Hill Lake |
| 2 | River Wensum (central)Anglian | 40 cm (15.7 in) | 37 cm (14.6 in) | 2 | 6 Aug 1997Edwards & Holmes Yard |
| 3 | Droitwich CanalMidlands | 39 cm (15.4 in) | 25.3 cm (10 in) | 7 | 4 Feb 2005Section 3- footbridge to Chawson Valley bridge |
| 4 | River Reach LodeAnglian | 35.5 cm (14 in) | 35.5 cm (14 in) | 1 | 13 May 1993Hallards Fen |
| 5 | River SoarMidlands | 34.8 cm (13.7 in) | 34.8 cm (13.7 in) | 1 | 10 Jun 1992Leicester Straights |
| 6 | River TameMidlands | 34 cm (13.4 in) | 34 cm (13.4 in) | 1 | 24 May 2016Wednesbury, The Woods |
| 7 | River SowMidlands | 32.5 cm (12.8 in) | 32.5 cm (12.8 in) | 1 | 4 Jul 2023Great Bridgeford |
| 8 | River DonYorkshire and North East | 30 cm (11.8 in) | 22 cm (8.7 in) | 4 | 25 Mar 2004Grimethorpe Pond |
| 9 | Well CreekAnglian | 29.8 cm (11.7 in) | 29.8 cm (11.7 in) | 1 | 23 Apr 1999Aqueduct Bridge |
| 10 | River BlackwaterAnglian | 29.5 cm (11.6 in) | 18.3 cm (7.2 in) | 17 | 27 Aug 1996Pointwell Mill |
Equal maximum lengths are ordered by sample size. Measurements are shown as recorded and are not converted into estimated weights.
10,833 fish measured
Measured crucian carp lengths
The median divides the measured sample in half. This distribution describes surveyed fish, not every crucian carp living in England.
Only positive individual lengths that pass RiverFish's general measurement checks are included. Each bar covers a 20 mm range.
Latest EA evidence
Latest crucian carp observations
The ten most recent survey visits that recorded crucian carp in named waterways.
| Date | River or waterway | Survey location | Fish recorded |
|---|---|---|---|
| 2 Jul 2024 | River Blythe | Molands Bridge | 4 |
| 7 Jun 2024 | River Box (Main Reaches) | Stone Street | 1 |
| 4 Jul 2023 | River Sow | Great Bridgeford | 1 |
| 2 May 2023 | Salford Stream | Dean Farm | 1 |
| 19 Mar 2020 | River Severn | Worcester racecourse fish rescue | 2 |
| 17 Mar 2020 | River Severn | Worcester racecourse fish rescue | 10 |
| 14 Feb 2017 | River Lee | Bayford Pond Waterhall | 28 |
| 25 Jan 2017 | River Stillwaters | Woodrow's Pond | 5 |
| 19 Jul 2016 | Main River Chew | Stanton Drew (Te) | 1 |
| 24 May 2016 | River Tame | Wednesbury, The Woods | 1 |
A survey record confirms crucian carp at that place and time. It does not show present-day abundance or fishing access.
249 positive survey visits
Survey distribution
EA surveys recorded crucian carp at 221 locations across 89 named waterways represented on RiverFish.
| Region | Waterways | Locations | Survey visits | Latest record |
|---|---|---|---|---|
| Anglian | 35 | 145 | 172 | 7 Jun 2024 |
| Midlands | 28 | 40 | 41 | 2 Jul 2024 |
| South East | 12 | 18 | 18 | 2 May 2023 |
| North West | 7 | 9 | 9 | 21 Jun 2013 |
| South West | 6 | 6 | 6 | 19 Jul 2016 |
| Yorkshire and North East | 1 | 3 | 3 | 25 Mar 2004 |
16 detailed pages
Crucian carp by river
Open any river-specific page for its measured lengths, largest surveyed individuals, locations and observation history.
Anglian 9 pages
Midlands 3 pages
Yorkshire and North East 2 pages
How to read this page
Survey measurements, not angling records
Environment Agency surveys are designed to monitor fish populations. Their largest measurement is not equivalent to a verified rod-and-line record, and the survey sample does not include every river or every crucian carp.
Waterway groups with administrative or mixed-river labels are excluded from the headline national totals and rankings. Their eligible river-specific pages remain available in the directory so no published destination is hidden.
The fish records use the Environment Agency source snapshot dated 10 August 2026.
How RiverFish handles the data →